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Which graph or graphs appear to show a sinusoid? 

http://prntscr.com/mjthdt

 

Answer choices: 

 

A. l and ll only 

B. l only

C. l and lll only 

D. ll only 

 

Note: Attachment above regarded to this question

 Feb 12, 2019
 #1
avatar+18866 
+2

C  1 and III  only

 

they both look like sine waves don't they?   Yah......

 Feb 12, 2019

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